/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 d3leaf@126.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.mapperdb.helper;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

/**
 * 注解辅助类
 * @author Administrator
 *
 */
public class Annt {

	Annotation annotation;
	Class<? extends Annotation> annotationClass;

	public static Annt use(Method method, Class<? extends Annotation> annotationClass) {
		if (method == null || annotationClass == null) return null;
		return new Annt(method, annotationClass);
	}

	public static Annt use(Annotation annotation) {
		if (annotation == null) return null;
		return new Annt(annotation);
	}

	public Annt(Method method, Class<? extends Annotation> annotationClass) {
		this.annotationClass = annotationClass;
		this.annotation = method.getAnnotation(annotationClass);
	}

	public Annt(Annotation annotation) {
		this.annotation = annotation;
		this.annotationClass = annotation.getClass();
	}

	@SuppressWarnings("unchecked")
	public <T> T get(String name) {
		try {
			return (T) annotationClass.getMethod(name).invoke(annotation);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	public <T> T get(String name, Class<T> returnClassType) {
		return get(name);
	}
}
